package net;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

import utils.UserLogUtil;

public class HttpRequest {
	
	public static void main(String[] args) {
//		String postResult = HttpRequest.sendPost("http://192.168.1.42:8080/appform/ws/scheduler/hostGroupList", "token=FABBE1B354FFE7B713BECBDEE402835147899E89CDF7DCC887883633D8A24D8E4A7F790CD928232D3D9A4254CF60554B869F04E4D1AE626D60B41552560DF7FD369AD331D8F8C181053D544667540070");
//		String postResult = HttpRequest.sendGet("http://192.168.1.42:8080/appform/ws/login", "username=jhadmin&password=jhadmin");
        HttpRequest.downloadFile("http://localhost:8080/JCPT/DownloadServlet","token=1","e:/122.txt");
//		Log4jInit.logger.info(postResult);
//        String a = "/appform/ws/jobs/flistbyid";
//        Log4jInit.logger.info(a.substring(a.lastIndexOf("/")+1,a.length()));
//        char a = 'A';
//        int b = Character.getNumericValue(a);
//        Log4jInit.logger.info(b);
	}
    /**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("Charset", "utf-8");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
//            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
//            for (String key : map.keySet()) {
//                Log4jInit.logger.info(key + "--->" + map.get(key));
//            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream(),"utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
        	UserLogUtil.log("===========HTTP GET ERROR!=========");
            e.printStackTrace();
            return null;
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     * 
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Charset", "gb2312");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(),"utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
        	e.printStackTrace();
            return null;
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
            	UserLogUtil.log("===========HTTP POST ERROR!=========");
                ex.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 将url对应的文件下载到newFileParth的文件目录下去
     * @param url
     * @param param
     * @param newFilePath
     * @return
     */
    public static boolean downloadFile(String url,String param,String newFilePath)
    {
        File file = null;
        try {
            // 统一资源
            URL urlPath = new URL(url+"?"+param);
            // 连接类的父类，抽象类
            URLConnection urlConnection = urlPath.openConnection();
            // http的连接类
            HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;
            // 设定请求的方法，默认是GET
//            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setRequestMethod("GET");
            // 设置字符编码
            httpURLConnection.setRequestProperty("Charset", "UTF-8");
            // 打开到此 URL 引用的资源的通信链接（如果尚未建立这样的连接）。
            httpURLConnection.connect();
            // 文件大小
            int fileLength = httpURLConnection.getContentLength();
            // 文件名
            String filePathUrl = httpURLConnection.getURL().getFile();
            String fileFullName = filePathUrl.substring(filePathUrl.lastIndexOf(File.separatorChar) + 1);
            BufferedInputStream bin = new BufferedInputStream(httpURLConnection.getInputStream());
            String path = newFilePath + File.separatorChar + fileFullName;
            file = new File(newFilePath);
            if (!file.getParentFile().exists()) {
                file.getParentFile().mkdirs();
            }
            OutputStream out = new FileOutputStream(file);
            int size = 0;
            int len = 0;
            byte[] buf = new byte[1024];
            while ((size = bin.read(buf)) != -1) {
                len += size;
                out.write(buf, 0, size);
                // 打印下载百分比
//                 Log4jInit.logger.info("下载了-------> " + len * 100 / fileLength + "%\n");
            }
            bin.close();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }  
      return true;
        
    }
}
